- fixed missing initialisations in constructor
- added event variables M3, M_bl and angle(b,l) to Event class
 - added multi-fit-variable for Binned_variable_analyser including correlations
 - added "automatic" histogram creation for /Binned_variable_analyser
Replaced 1-fit variable analysers with multi-(fit-)variable analysers
updated number of processed events for TTJets
updated formatting for MCParticle class
added 'verbose' option
tidied up:
 - Analysis binary
 - TTbar + X analyser
 - test configuration
increased limit for ST variable from 2 to 3 TeV
added TopPairMCEvent to encapsulate the particle finding
updated BinningAnalyser
 - use TopPairMCEvent
 - better binning
 - reduced code from 925 to 168 lines
Merge pull request #95 from kreczko/multi_variable_binning

Multi variable binning
Adding ID, Iso and Trigger scale factors: updated for 8TeV muons,
added for 8TeV electrons, 7TeV electrons & muons, added
systematic setting.